/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetEditorUtilities.h
Mapping of classes to delegate callbacks when a Blueprint is created, occurs post Event node creation
static [TMultiMap](API\Runtime\Core\Containers\TMultiMap)< void *, [FOnBlueprintCreatedData](API\Editor\UnrealEd\Kismet2\FKismetEditorUtilities\FOnBlueprintCreatedData) > OnBlueprintCreatedCallbacks;